I'm right there with you.
I so understand how you feel. I get overwhelmed when things pile up and have a hard time making myself face my mess. I have a few messes to clean up right now.
You definitely have the right idea about working fifteen minutes a day. When I was a stay-at-home mom I found that I could set a timer for 15-20 minutes and spend that time doing as much housework as I could. It is amazing how much you can get done that way. Since there is a limit you feel like you want to beat the clock. Sometimes I would get so carried away I would continue longer. If you find yourself stuck, try the timer idea. I think having that limit spurs me to do as much as I can during that short period.
Good luck and keep up the good work. I think I will get my timer back out tomorrow.